--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ucx/properties.c Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,264 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ucx/properties.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+UcxProperties *ucx_properties_new() {
+ UcxProperties *parser = (UcxProperties*)malloc(
+ sizeof(UcxProperties));
+ if(!parser) {
+ return NULL;
+ }
+
+ parser->buffer = NULL;
+ parser->buflen = 0;
+ parser->pos = 0;
+ parser->tmp = NULL;
+ parser->tmplen = 0;
+ parser->tmpcap = 0;
+ parser->error = 0;
+ parser->delimiter = '=';
+ parser->comment1 = '#';
+ parser->comment2 = 0;
+ parser->comment3 = 0;
+
+ return parser;
+}
+
+void ucx_properties_free(UcxProperties *parser) {
+ if(parser->tmp) {
+ free(parser->tmp);
+ }
+ free(parser);
+}
+
+void ucx_properties_fill(UcxProperties *parser, char *buf, size_t len) {
+ parser->buffer = buf;
+ parser->buflen = len;
+ parser->pos = 0;
+}
+
+static void parser_tmp_append(UcxProperties *parser, char *buf, size_t len) {
+ if(parser->tmpcap - parser->tmplen < len) {
+ size_t newcap = parser->tmpcap + len + 64;
+ parser->tmp = (char*)realloc(parser->tmp, newcap);
+ parser->tmpcap = newcap;
+ }
+ memcpy(parser->tmp + parser->tmplen, buf, len);
+ parser->tmplen += len;
+}
+
+int ucx_properties_next(UcxProperties *parser, sstr_t *name, sstr_t *value) {
+ if(parser->tmplen > 0) {
+ char *buf = parser->buffer + parser->pos;
+ size_t len = parser->buflen - parser->pos;
+ sstr_t str = sstrn(buf, len);
+ sstr_t nl = sstrchr(str, '\n');
+ if(nl.ptr) {
+ size_t newlen = (size_t)(nl.ptr - buf) + 1;
+ parser_tmp_append(parser, buf, newlen);
+ // the tmp buffer contains exactly one line now
+
+ char *orig_buf = parser->buffer;
+ size_t orig_len = parser->buflen;
+
+ parser->buffer = parser->tmp;
+ parser->buflen = parser->tmplen;
+ parser->pos = 0;
+ parser->tmp = NULL;
+ parser->tmpcap = 0;
+ parser->tmplen = 0;
+ // run ucx_properties_next with the tmp buffer as main buffer
+ int ret = ucx_properties_next(parser, name, value);
+
+ // restore original buffer
+ parser->tmp = parser->buffer;
+ parser->buffer = orig_buf;
+ parser->buflen = orig_len;
+ parser->pos = newlen;
+
+ /*
+ * if ret == 0 the tmp buffer contained just space or a comment
+ * we parse again with the original buffer to get a name/value
+ * or a new tmp buffer
+ */
+ return ret ? ret : ucx_properties_next(parser, name, value);
+ } else {
+ parser_tmp_append(parser, buf, len);
+ return 0;
+ }
+ } else if(parser->tmp) {
+ free(parser->tmp);
+ parser->tmp = NULL;
+ }
+
+ char comment1 = parser->comment1;
+ char comment2 = parser->comment2;
+ char comment3 = parser->comment3;
+ char delimiter = parser->delimiter;
+
+ // get one line and parse it
+ while(parser->pos < parser->buflen) {
+ char *buf = parser->buffer + parser->pos;
+ size_t len = parser->buflen - parser->pos;
+
+ /*
+ * First we check if we have at least one line. We also get indices of
+ * delimiter and comment chars
+ */
+ size_t delimiter_index = 0;
+ size_t comment_index = 0;
+ int has_comment = 0;
+
+ size_t i = 0;
+ char c = 0;
+ for(;i<len;i++) {
+ c = buf[i];
+ if(c == comment1 || c == comment2 || c == comment3) {
+ if(comment_index == 0) {
+ comment_index = i;
+ has_comment = 1;
+ }
+ } else if(c == delimiter) {
+ if(delimiter_index == 0 && !has_comment) {
+ delimiter_index = i;
+ }
+ } else if(c == '\n') {
+ break;
+ }
+ }
+
+ if(c != '\n') {
+ // we don't have enough data for a line
+ // store remaining bytes in temporary buffer for next round
+ parser->tmpcap = len + 128;
+ parser->tmp = (char*)malloc(parser->tmpcap);
+ parser->tmplen = len;
+ memcpy(parser->tmp, buf, len);
+ return 0;
+ }
+
+ sstr_t line = has_comment ? sstrn(buf, comment_index) : sstrn(buf, i);
+ // check line
+ if(delimiter_index == 0) {
+ line = sstrtrim(line);
+ if(line.length != 0) {
+ parser->error = 1;
+ }
+ } else {
+ sstr_t n = sstrn(buf, delimiter_index);
+ sstr_t v = sstrn(
+ buf + delimiter_index + 1,
+ line.length - delimiter_index - 1);
+ n = sstrtrim(n);
+ v = sstrtrim(v);
+ if(n.length != 0 || v.length != 0) {
+ *name = n;
+ *value = v;
+ parser->pos += i + 1;
+ return 1;
+ } else {
+ parser->error = 1;
+ }
+ }
+
+ parser->pos += i + 1;
+ }
+
+ return 0;
+}
+
+int ucx_properties2map(UcxProperties *parser, UcxMap *map) {
+ sstr_t name;
+ sstr_t value;
+ while(ucx_properties_next(parser, &name, &value)) {
+ value = sstrdup_a(map->allocator, value);
+ if(!value.ptr) {
+ return 1;
+ }
+ if(ucx_map_sstr_put(map, name, value.ptr)) {
+ alfree(map->allocator, value.ptr);
+ return 1;
+ }
+ }
+ if (parser->error) {
+ return parser->error;
+ } else {
+ return 0;
+ }
+}
+
+// buffer size is documented - change doc, when you change bufsize!
+#define UCX_PROPLOAD_BUFSIZE 1024
+int ucx_properties_load(UcxMap *map, FILE *file) {
+ UcxProperties *parser = ucx_properties_new();
+ if(!(parser && map && file)) {
+ return 1;
+ }
+
+ int error = 0;
+ size_t r;
+ char buf[UCX_PROPLOAD_BUFSIZE];
+ while((r = fread(buf, 1, UCX_PROPLOAD_BUFSIZE, file)) != 0) {
+ ucx_properties_fill(parser, buf, r);
+ error = ucx_properties2map(parser, map);
+ if (error) {
+ break;
+ }
+ }
+ ucx_properties_free(parser);
+ return error;
+}
+
+int ucx_properties_store(UcxMap *map, FILE *file) {
+ UcxMapIterator iter = ucx_map_iterator(map);
+ void *v;
+ sstr_t value;
+ size_t written;
+
+ UCX_MAP_FOREACH(k, v, iter) {
+ value = sstr((char*)v);
+
+ written = 0;
+ written += fwrite(k.data, 1, k.len, file);
+ written += fwrite(" = ", 1, 3, file);
+ written += fwrite(value.ptr, 1, value.length, file);
+ written += fwrite("\n", 1, 1, file);
+
+ if (written != k.len + value.length + 4) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+